<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>I have a Outpatient Medical/Surgery Building in Texas.</DIV>
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<DIV>The building is generally served by two DX RTUs with VAV and electric heat. One unit has a branch which is constant volume for 4 surgery rooms. THIS branch has its own 20 ton scroll chiller with 38 DegF water to dehumifiy the air.</DIV>
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<DIV>Any suggestions as to accurately modeling THIS ONE?</DIV>
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<DIV>Please respond to <U><FONT color=#0000ff><FONT face=Calibri><A href="mailto:jaulbach@ptrenergy.com">jaulbach@ptrenergy.com</A>.</FONT></FONT></U></DIV>
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<DIV><U><FONT color=#0000ff><FONT face=Calibri>Thanks !!<SPAN style="mso-bookmark: _MailAutoSig"></SPAN><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></SPAN><SPAN style="mso-bookmark: _MailAutoSig"></SPAN></FONT></FONT></U></DIV>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><o:p><FONT face=Calibri> </FONT></o:p></SPAN></P>
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<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><A name=_MailAutoSig><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><FONT face=Calibri>John R. Aulbach, PE, CEM<o:p></o:p></FONT></SPAN></A></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><FONT face=Calibri>Senior Energy Engineer<o:p></o:p></FONT></SPAN></SPAN></P>
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<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><FONT face=Calibri><SPAN style="mso-bookmark: _MailAutoSig"><B><SPAN style="FONT-VARIANT: small-caps; COLOR: navy; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes">Partner</SPAN></B></SPAN><SPAN style="mso-bookmark: _MailAutoSig"><B><SPAN style="FONT-VARIANT: small-caps; COLOR: green; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"> </SPAN></B></SPAN><SPAN style="mso-bookmark: _MailAutoSig"><B><SPAN style="FONT-VARIANT: small-caps; COLOR: #006600; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes">Energy</SPAN><SPAN style="FONT-VARIANT: small-caps; COLOR: navy; mso-no-proof: yes"><o:p></o:p></SPAN></B></SPAN></FONT></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><FONT face=Calibri>1990 E. Grand Avenue, El Segundo, CA 90245<BR>W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745<o:p></o:p></FONT></SPAN></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN style="mso-bookmark: _MailAutoSig"></SPAN><A href="http://www.ptrenergy.com/"><FONT color=#800080><FONT face=Calibri><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes">www.ptrenergy.com</SPAN></SPAN><SPAN style="mso-bookmark: _MailAutoSig"></SPAN></FONT></FONT></A><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><FONT face=Calibri> </FONT></SPAN></SPAN><A href="mailto:%7C%20jaulbach@ptrenergy.com"><FONT color=#0000ff><FONT face=Calibri><SPAN style="mso-bookmark: _MailAutoSig"><SPAN style="mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes">| jaulbach@ptrenergy.com</SPAN></SPAN><SPAN style="mso-bookmark:
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